An Australian Shepherd's food needs move with its workload, not with the calendar page. A dog running stock or trialling all summer may eat noticeably more than the same dog dozing through a housebound January. Adjust the portion by body condition every two weeks, keep the recipe constant, and change the amount rather than the food.
The same dog has two different jobs a year
Australian Shepherds were built to cover ground. Many of them do exactly that from May to September, whether that is stock work, agility weekends, long hikes or a rural property they patrol from dawn. Then the ground freezes, the trials stop, the family stops hiking, and the dog spends the winter indoors doing considerably less.
The dog's appetite does not always follow. Herding breeds are often driven enough to eat whatever they are offered regardless of how much they moved that day, so a winter Aussie fed a working summer portion will gain, quietly, over about eight weeks. The coat hides it, which is the real problem. A thick double coat can conceal two or three pounds on a fifty pound dog until you put your hands on the ribs.
The reverse also catches people. An owner who trimmed portions in December and never put them back can find a dog looking sharp and ribby by the second week of serious summer work.
What actually changes between seasons
It helps to separate three things that owners tend to bundle together: how much energy the dog is spending, how much heat it is losing or generating, and how much time it is spending near the food bowl.
Notice that the lever is almost always the amount, not the recipe. Switching foods twice a year is a digestive disturbance for no nutritional gain. A complete and balanced adult recipe is complete and balanced in January and in July.
How to make the adjustment without guessing
Pick a fixed day of the fortnight and do a hands on check. Ribs under a thin cover, a waist visible from above, a tuck visible from the side. Write one word in a note on your phone: lean, right, or heavy. Two consecutive readings in the same direction mean you change the portion. One reading means nothing.
When you do change it, change it by a small fraction and hold for two weeks before judging. Big swings overshoot, and with a dog that is also changing its activity level you will never work out which variable caused what.
Keep meal timing fixed across the year even when the amount moves. Aussies are routine driven, and a dog that knows food comes at six is a calmer dog than one guessing. On heavy work days, split the same daily total across three feedings instead of two rather than piling more into one bowl.
Water deserves the same attention as food in summer. A working Aussie in July will drink far more than the same dog in February, and a dog that is short on water will often go off its food before it shows any other sign.
Choosing a recipe you can keep constant
Because the plan is to hold the recipe steady and move the portion, pick a recipe you are happy to feed in both seasons. For an active adult Australian Shepherd, Lamb and Beef is a gently cooked, complete and balanced adult option built on two red meat proteins.
My Perfect Pet does not publish calorie content, guaranteed analysis or feeding directions on its website, so this article cannot give you a summer figure or a winter figure. That is not evasion, it is simply not published data. The starting portion comes from the weight calculator on the product page and the Nutrition Facts Sheet PDF hosted there, plus the printed pack. The seasonal adjustment on top of that comes from your hands and your vet.
If you want a number the site does not carry, ask My Perfect Pet in writing. A written reply is something you can take to your veterinary appointment.
For a general grounding in what a pet food label does and does not tell you, the AAFCO consumer pages explain how nutritional adequacy statements and feeding directions are meant to work.
Frequently asked questions
Do Australian Shepherds need more food in summer or winter?
It depends on workload rather than temperature. An Aussie working stock or trialling through summer usually needs more food than it does during an inactive winter. A dog that stays active outdoors through a cold winter may need close to its summer amount. Judge by body condition every two weeks, not by the season alone.
Should I change my Australian Shepherd's food when its activity changes?
Usually not. Change the amount rather than the recipe. A complete and balanced adult food remains complete and balanced whatever the season, and repeated food switches risk digestive upset for no nutritional benefit. Keep the recipe constant and treat the portion as the adjustable part.
How do I check an Australian Shepherd's weight under a thick coat?
Use your hands rather than your eyes. Spread your fingers across the ribs and feel for each rib under a thin layer of cover, then feel for a narrowing behind the ribcage. A double coat hides body outline well enough that visual checks alone will miss several pounds of change.
How much should I feed an Australian Shepherd each day?
My Perfect Pet does not publish feeding directions, calorie content or weight based portion charts on its website, so there is no figure to quote. Use the weight calculator and Nutrition Facts Sheet on the product page for a starting point, check the printed pack, and ask your vet to adjust for your dog's workload.
How quickly should I increase food when work starts again in spring?
Increase gradually across two to three weeks rather than in one step. The dog's output rises faster than its condition adjusts, and a sudden large increase risks digestive upset. Small increments, held long enough to see the effect, give you something you can actually read.
Related reading: Feeding a Senior Border Collie Who Will Not Slow Down and Feeding a Vizsla Who Burns Through Calories on Every Walk